Nail file



FIG. 1 is a perspective view of a nail file showing my new design;

FIG. 2 is an elevational end view thereof, the end opposite being a mirror image;

FIG. 3 is a side elevational view of a first thereof;

FIG. 4 is a side elevational view of a second thereof;

FIG. 5 is a side elevational view of a third thereof; and,

FIG. 6 is a side elevational view of a fourth thereof. 

The ornamental design for a nail file, as shown and described. 